Title:
DIALKYL POLYSULFIDE, PROCESS FOR PREPARING DIALKYL POLYSULFIDE, EXTREME-PRESSURE ADDITIVE AND LUBRICATING FLUID COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2014/188948
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a dialkyl polysulfide which can be added to a lubricating oil in a wide range of amounts and can effectively form a metal sulfide film on a metal surface and which is suitable for use as an extreme-pressure additive that is not susceptible of causing the corrosion of the metal surface. The present invention provides a dialkyl polysulfide which is represented by general formula (1) [wherein R1 and R2 represent alkyl groups respectively, and n is an integer of 1 to 6] and in which the sum of the content of a compound of general formula (1) wherein n is 2 and the content of a compound thereof wherein n is 3 is 80 to 100mass% relative to the total amount of the compounds of general formula (1).
Inventors:
IBA TAKAFUMI (JP)
SAKATA HIROSHI (JP)
SAKATA HIROSHI (JP)
Application Number:
PCT/JP2014/062935
Publication Date:
November 27, 2014
Filing Date:
May 15, 2014
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
C07C321/14; C07C319/24; C07C319/28; C10M135/22; C10M169/04; C10N30/06; C10N30/12; C10N60/10; C10N70/00
Foreign References:
| JP2012077078A | 2012-04-19 | |||
| EP0554011A2 | 1993-08-04 | |||
| JPS62500590A | 1987-03-12 | |||
| US4191659A | 1980-03-04 | |||
| JPH05286925A | 1993-11-02 | |||
| JPH05247675A | 1993-09-24 | |||
| JPS5910559A | 1984-01-20 | |||
| JPH0334965A | 1991-02-14 | |||
| JPH1171343A | 1999-03-16 |
Other References:
DAVEY, W. ET AL.: "The extreme-pressure lubricating properties of some sulphides and disulphides, in mineral oil, as assessed by the Four-Ball Machine", WEAR, vol. 1, no. 4, February 1958 (1958-02-01), pages 291 - 304, XP055303602
HARPP, D. N. ET AL.: "Organic sulfur chemistry. 38. Desulfurization of organic trisulfides by tris(dialkylamino)phosphines. Mechanistic aspects", THE JOURNAL OF ORGANIC CHEMISTRY, vol. 45, no. 25, 1980, pages 5155 - 5160, XP055295616
HARPP, D. N. ET AL.: "Reaction of trialkyl phosphites with organic trisulfides. Synthetic and mechanistic aspects", THE JOURNAL OF ORGANIC CHEMISTRY, vol. 44, no. 23, November 1979 (1979-11-01), pages 4140 - 4144, XP055295618
IRANPOOR, N. ET AL.: "Heteroaromatic azo compounds as efficient and recyclable reagents for direct conversion of aliphatic alcohols into symmetrical disulfides", TETRAHEDRON LETTERS, vol. 53, no. 51, 19 December 2012 (2012-12-19), pages 6913 - 6915, XP055295633
GRAAF, W. ET AL., JOURNAL OF THE CHEMICAL SOCIETY PERKIN TRANSACTIONS 1, vol. 6, 1995, pages 635 - 640, XP055295654
CHOI, J. ET AL.: "A Convenient One-Pot Synthesis of Disulfides from Thioacetates via Nickel Boride Catalyzed Methanolysis and Disproportionation", SYNLETT, vol. 10, October 1995 (1995-10-01), pages 1073 - 1074, XP055295656
HARPP, D. N. ET AL.: "Organic sulfur chemistry. 38. Desulfurization of organic trisulfides by tris(dialkylamino)phosphines. Mechanistic aspects", THE JOURNAL OF ORGANIC CHEMISTRY, vol. 45, no. 25, 1980, pages 5155 - 5160, XP055295616
HARPP, D. N. ET AL.: "Reaction of trialkyl phosphites with organic trisulfides. Synthetic and mechanistic aspects", THE JOURNAL OF ORGANIC CHEMISTRY, vol. 44, no. 23, November 1979 (1979-11-01), pages 4140 - 4144, XP055295618
IRANPOOR, N. ET AL.: "Heteroaromatic azo compounds as efficient and recyclable reagents for direct conversion of aliphatic alcohols into symmetrical disulfides", TETRAHEDRON LETTERS, vol. 53, no. 51, 19 December 2012 (2012-12-19), pages 6913 - 6915, XP055295633
GRAAF, W. ET AL., JOURNAL OF THE CHEMICAL SOCIETY PERKIN TRANSACTIONS 1, vol. 6, 1995, pages 635 - 640, XP055295654
CHOI, J. ET AL.: "A Convenient One-Pot Synthesis of Disulfides from Thioacetates via Nickel Boride Catalyzed Methanolysis and Disproportionation", SYNLETT, vol. 10, October 1995 (1995-10-01), pages 1073 - 1074, XP055295656
Attorney, Agent or Firm:
KONO MICHIHIRO (JP)
Michihiro Kono (JP)
Michihiro Kono (JP)
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